There, Newton doesn't tell you what forces are going to be acting on a body in a given situation.

在式子里,牛顿没有告诉你,在给定条件下,有哪些力,作用在物体上

耶鲁公开课 - 基础物理课程节选

And the reason for this, and this is a very important point about the photoelectric effect, and the point here is that the electrons here are acting as particles, you can't just add those energies together.

这个现象的原因是，这是光电效应非常重要的一个论点,这个论点就是电子,在这里是粒子行为，你不能仅仅把这些能量加在一起。

麻省理工公开课 - 化学原理课程节选

He's the most connected actor in the history of acting because it isn't that he's been in more movies than everybody else.

他是演艺界有史以来连接性最强的人,并不是因为他演的电影比别人多。

耶鲁公开课 - 心理学导论课程节选

In response, Mr. Obama felt compelled to note that he wasn't acting on his own.

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And he certainly wasn't acting out of conviction.

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It's important to remember that the person isn't acting forgetful or difficult to hurt family members or caregivers, aging experts said, and they can still pick up on negative reactions, even if they don't understand why.

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